STB4395 Datasheet | STMicroelectronics

SCRIPTION The STB4395(A) is a fully integrated receivertransmitter designed for CT2 applications, and incorporates all the VCO’s, synthesizers, PLLs, and channel select logic, to make a fully functional ”single chip” radio. The receiver is of the double superhet architecture and operates from an aerial input (via a SAW filter) to bitstream output to CT2 format, whilst the transmitter operates from I/Q inputs to +13d Bm at the final frequency. A single (external) frequency reference is all that is required to give full coverage over the range of 800 to 1000MHz.The on-off slope of the Transmit PAis governed internally to give the required switch-on ramp, whilst the output can be swiched from low to high power by means of an external digital control signal. The channelselect is controlled from a digital serial input, and allows continuous channel control from 800 to 1000MHz. T h e S TB 4 3 9 5 e x is t s in t wo v ersio n s: the STB4395, which has I/I, Q/Q transmit data input/outputs, is designed to operate with the SGS-THOMSON baseband panion part, the ST5095. The STB4395A has a 3 wire I/Q interface and is patible with mercially available I/Q transmit data baseband IC’s. April 1996 TQFP64 (Plastic Package) ORDER CODE : STB4395 or STB4395A 1/16 This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice. STB4395 CONTENT 1 1.1 1.2 1.3 1.4 1.5 2 .. Page 3 4 5 5 6 6 7 8 8 8 8 8 9 9 9 9 9 9 9 10 10 11 11 11 11 12 13 13 13 13 13 14 14 14 14 14 15 15 15 15 15 15 15 16 ................ ... ... .... . .. ... ................ .. .. . .. . .- . . .. .. . .. . .. .. .. . . PIN DESCRIPTION- - - - - - - - - - . . . PIN CONNECTIONS- - - - - - - . PIN LIST - - - - - - - - - ANALOG AND FILTER...